Color: White ornamented by rather rectangular brown blotches bordered by a white ridge with thin brown dashes, about six per whorl, blotches extend lengthwise.

Shell large, with about 25 flattened whors; aperture small and almost rectangular with twisted columella; shell scabrously latticed, with two spiral bands of nodules divided by a groove below the suture, often the nodules fused together to form a single raised band, fine spiral ridges crossed by axial riblets.